R$-4\mathrm{.}11$

Give a big$-$Oh characterization, in terms of $\backslash ($ n $\backslash ),$ of the running time of the example$3$ method shown in Code Fragment $4\mathrm{.}12$

$```$

$/**$ Returns the sum of the prefix sums of given array. $*/$

public static int example$3($int$[]$ arr$)\{$

int n $=$ arr.length, total $=0$;

for $($int j$=0$; j